android/sdk/src/main/java/com/taobao/weex/ui/view/WXSmoothScroller.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package com.taobao.weex.ui.view;

import android.annotation.SuppressLint;
import android.content.Context;
import android.view.animation.Interpolator;
import android.widget.Scroller;

/**
 * modify the scrollFactor
 */
public class WXSmoothScroller extends Scroller {

  private double mScrollFactor = 1;

  public WXSmoothScroller(Context context) {
    super(context);
  }

  public WXSmoothScroller(Context context, Interpolator interpolator) {
    super(context, interpolator);
  }

  @SuppressLint("NewApi")
  public WXSmoothScroller(Context context, Interpolator interpolator, boolean flywheel) {
    super(context, interpolator, flywheel);
  }

  /**
   * Set the factor by which the duration will change
   */
  public void setScrollDurationFactor(double scrollFactor) {
    mScrollFactor = scrollFactor;
  }

  @Override
  public void startScroll(int startX, int startY, int dx, int dy, int duration) {
    super.startScroll(startX, startY, dx, dy, (int) (duration * mScrollFactor));
  }

}